LLMs can unmask pseudonymous users at scale with surprising accuracy – Ars Technica

“Our findings have significant implications for online privacy,” the researchers wrote. “The average online user has long operated under an implicit threat model where they have assumed pseudonymity provides adequate protection because targeted deanonymization would require extensive effort. LLMs invalidate this assumption.”

— Read on arstechnica.com/security/2026/03/llms-can-unmask-pseudonymous-users-at-scale-with-surprising-accuracy/